Wireless elevator-signaling system.



F. S. McCULLOUGH.

WIRELESSELEVAIOR SIGNALING SYSIEM. AFPLICMION FILED MN. 22. um.

1,318,165. Patented Ocf. 7,1919.

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f+$;--MCULLOUGH. WIRELESS ELEVATOR SIGNALING SYSTEM: APPLICATION FILED IAN. 22. IBIT.

$181165; Patented 0m. 711919.

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21,318,165. i Specification of Letters'ra'tent. e15,? I

Application fi1ed3anuary22,1917. Serial 1104433560.; Yb'dtl wkomz't mm concern: countered in such signal s stems, owing to 1B "it known. tint I, FREDERICK S. MC- the large amount of meta licwork off thc "CULLbUGH, a citizen of the-United States, elevator cars, shafts, etc. residing at Cleveland, in the county of Cuya- The wireless transmission of signals, as iihoga and State'of Ohio,- have invented a heretofore accomplished, depends upon a certain"'new and useful Impmvcment in conducting. sheet ensurfaceas the surface Wireless "Elevator-Signaling Systems, of of earth upon whichfthe .ether waves genwhich the following is a full, clear, and erated by the apparatus ma act and it is enact description, reference being had to well known that any obi intermediate m th e accompanying drawings. the sending and receiving. stationsmay air This'iiivention relates to a wireless sigliterate or-absorb .theener andinterfere naling system, and is herein shown and (lewith successful slgnaling. ithmy system "scribed as "embodied in a system for sig- I use the energy which surrounds a'single .f-'naling'elevat0rs. An essential object is to wire connected with the source and cause, it lfi -provide-a simple, eflicient means for actuatto .cross an air dielectric of ,a certain dis- Hlg signals in elevator, cars and on the tance by the use of a predetermined freyarious floors of the building, and which quency corresponding to such air distance, shall be comparatively cheap to manufacand thereby avoid an ndan'gefofinterferinure and not liable to get out of order. -I ence or absorption and render commercially 20 'a'cconiplis'hthe above object by constructing practical the signaling'of elevators by wire- 76 a system which eliminates a vcr large porless transmission. j

'tio' ti'of thewiringnecessary.for the present My invention is hereinafter more fully signal systems and I greatly reduce the apdescribed in connection with the (1 wings "-paratus required. My invention avoids the winch' illustrate a convenient arra ment 7 25 necessity of connecting the elevator with the thereof, and the essential characteristics of 80 "floors by wires. the invention are set forth in theclaims.

-In carrying outmyinvention I use a high In the drawings, Figure 1 is a diagram 1 frequency generator preferably connected. of a single'unit of the syst'emyFig. Q-isa' by a single wire with capacity members arside elevation of the relay Fig. 3 is an axial 80- ranged at the several floors for one elevator section thereofiFig. 4 is atransverse horicar or a plurality of elevators in a bank. zontal section taken substantially on the line 1 'I arrange capacity members on the car 4-4 of Fig. 3; Fig. 5 is a similar section adapted to be brought into proximity with taken substantially on the'line 5 -5 of Fig.

the successive capacity members for the 3; Fig. 6 1s a section on the line 6-'6 of: 88 'fioors so that when n slgnal switch is actu- Fig. 3. 90 ated on any floor it may connect the corre- Fig. 1 diagrammaticallyillustrates a. sinsponding capacity member with the generatgie unit of the invention, itbe' undering means and cause energy to be transstood that a similar arrangement-o -myfa lnltted across the air dielectric from one paratus may be adapted for as many ii '40 "pacity to-the other while they are additional cars as desired. On each'floor I jacent, and I arrange on the elevator car a provide the usual push button switches for -'1elay adapted to be actuated by the electric up and down signals, asindicated at 1 and impulse assin from one capacity to the 2 respective] These signals are prefab other. his re ay may control a visual or ably rovide with means for normally hold- 4'5 audible signal on the elevator car. ing tiem in operating position untiLa com- IO To make the system more complete I may plete signal has been eflected. .For example,, arrange an additional capacity plate on each the push buttons may .be small plungers car ateach floor and a relay on each floor tapered at their inner ends to on go the to actuate-a signal indicating that a car is insulated ends of verticall mova let sole- 50.aboutto respond to the signal of the waiting noid cores 4 of the solenoi s 5.' The upper 10: passenger. Other objects of my invent-10w end of these cores engage and o te are to so arrange such a signal system that switches 6 coacting with a contact 7, where it may entirely avold interference or conby when the coils are energized the solenoids fusion of signals or loss of energy. This hold these switches in closed positions and 56 has heretofore been one'of the obstacles enrelease. them upon de'cnerzization of the visual signals comprising electric lights 8 and 9 for the up and down signals respectively, and within each elevator car I provide a signal light 10.

In the dial am the circuit for the down button inelu es a wire 31 conneeting the contact 7 and'the coil which is connected 1 at its other terminal with the battery from which a wire 32 leadsto a ma etic coil 33 actuating-"an armature 84; mm the coil 33 a wire 35 leads to a contact36 adapted to be connected with a contact 87 b a bridge 25 carried b a vertically shiftahle rod 18 moved by tlie elevator at each end of its travel to cause this bridge to render operative circuits for the button cor-' responding to its direction. A wire 38 leads from the contact terminal 37 to the switch 6. At 40 is indicated a hi h frequency generator which is connec with a coil 4:1, the primar of a transformer having a sec ondary coi 42. This coilis arranged to generate waves of a predetermined frequency and its oscillations are undamped. A wire 16 is connected with one terminal of the coil 42 and has branch contacts adapted to be engaged by the switches 34 and 1% for the up and down signals. Leading from the "switch 34 is a wire 43 adapted to connect by a wine '14 with a terminal, shown as pi voted at 45 and coacting with terminals 46 and 48. A wire 49 leads to a capacity plate I no 11 which is preferably in the form of a nar-- row ribbon mounted in the elevator shaft. ALA is indicated, in dot and dash lines, the car in whichis mounted the signal light 10 7 controlled by a local circuit including the battery 50- and governed by an armature switch 20' under the control of the relay, in-

dicated at 13, whichis of a s ial construction to behereinafter descri d; The relay '13Lis connected by the wire 19 with a capacity plate 12 adapted to'pass in proximity to the several capacity plates 11 of the series in the elevator shaft.

The operation of the circuitso far described is as follows: On the ilctuation of 1 the lunger 2, .the solenoid is'moved ripwardly actuati the switch 6 closing the circuitdescribiizfi leading through the coil 5, battery 30, magnetic coil-83 and bridge 25, and the solenoid remains up holding the switch closed, The coil 33 closes the armatzJreB-t aaiinst the contact of the wire 16, whereby t e transformer is connected with 69" the capacityplate 11 through the wires 43,

i4 switch 17 and wire l9. This causes a field of energy to surround the latter wiring oowmee'tion and capacity plate, which energ 13 transmitted to the capacity plate 12 when it onms opposite the capacity plate 11 and thence to the relay 13, actuating the switch 20 and notifying the operator inthe car, a suitable distance in advance of'thefloor at which the button 2 was actuated, by causing the light 10 to become incandescent.

To break the button circuit and ermit the switch 6 to' open at'the proper time, I provide the usual switch indicated at 52 which is opened by the door of the elevator in the usual manner. t This permits the switch 6 to open after which-the door switch is again closed by gravity or aspring, as

A similar circuit for the up buttons is provided including thebattery 30",!co'il 33",.

actuatin the armature '14, and wire 35" leadingt rough the switch'53 tothe'contaet 39 and thence back through the bridge 25 and wire 35, which is also connected with the switch 6 for the up signal circuit. Thus, when therdd 18 iszmovcd upwardly by a bumper,'not shown actuated by the car only the up signal on 'any of the-floors will be. I

o ei'tated or the car of the corresponding S18.

When either of these push button circuits is energized the correspondin up or down light on the pro eljfloor is led as the car alpproachest o floor an receives its s gna To accomplish this, I rovide a local czrclut for these 54 connected by a common wire 55"which is branched through the two vlights of the two contacts 48' and r filheretofore mentioned and either of which may connect with the switch 17, connected at 45 with a wire 56 'leading'to -an'armature 58 coacting within contact corinected b a'wire-59 with thehcttery54. -The' switch 1 is shown as'havin a connection at 57 with the v'erticall more Is rod';18 whereor 46 corresponding'to the" irectionin which the c ar1s moving. As shown, it stands in posit on to actuate the-down lighti'il'whenever the switcl1 58 is'closed.

TlllS answering signal admitted by clos ing the switch 58- rongha relay similar to the relay lfljan'd connected with a' capacity 22 attheprcper distance from the floor, which in turn receives. energy from the capacity 21 carried by the car and connected y the wire 60 withthe switch 20 which is in turn connected by a wire 61 with the coil 62 of a transformer and generator 40 carried by the car. By this arrangement it will be seen that when the switch 20 is actuated to signal the car at the same time this switch the generator-with the capacity 21 and transmits encr to the relay 23 Tgovernin the floor signal Ight; he signs to the elevator actuated when the car is moving u wardly is controlled by the switch 14 whic may contact with one of the contacts of the wire 16 and which is connected by a wire45 with the terminal 48.

ghts inclu ing a battery 105 by. it"cooperatps 'wit' thegroper contact 48,

.htr'anged to -trolling said connections, a relay adapted to i be actuated by electrostatic-stress and rewith t e capacity plate on the car,

no return conductor and connected and a. signal circuit on the car controlled thereby.

3.;Iii a wireless elevator signal system,

quirin '1- thetcombination with manually controlled 5 up and 'downdirections, a high frequency generator and a transformer, capacity memsignal-circuits on each floor for indicating ers. arranged to correspond to the various floors hnd a capacity member carried by the car,.co'nnections between the first mentioned capacity members and the transformer, said first mentioned circuits controlling said connections, a'relay adapted to be actuated by electrostatic stress and requirin no return conductor and connected with 518 capacity plate on the car, a signal circuit on the car controlled thereby,'u and down signals on i the various floors, ad itional capacity plates,

a generating means on the car, and. a relay similar to said first mentioned relay for controlling the last mentioned signals.

4. In a wir'eless elevator signal system, the combination with manually controlled signal circuits on each floor for indicating up and down directions, a high frequency generator 'a'nd a transformer, capacity members arranged to correspond to the various floors and a capacity member carried by thecar,

connections between the first 'nientioned capacity members and the transformer, said first mentioned circuits controlling said connect-ions, a'relay adapted to be actuated by her on the car, a signal circuit onflie car electrostatic stress and requirin no return conductor and connected with tie ca acity 46 P late on the car, a signal circuit on t e car controlled, thereby, up and down signals on the various flooqs, additional capacity members, a generating means on the ear, and a similarrelay for controlling the last mentioned signals, the signals on the various floors being actuated simultaneously with the signal in the relay.

5. In a wireless elevator signal system, means for generating high frequency oseillations, capacity lllBll'lbBl'S arranged to cor respond to the various floors and a capacity member carried by the car, conductor connections between the first mentioned pabity plat and the transformer, means for controlling said connections to govern the s1g Pals, a. relay adapted to be actuated by electrostatic stress and requiring he return co ductor and connected with the capacity mel car and governed by its controlled thereby, floor signals, additional capacity members, a generating means on the car, and a second relay similar to the first mentioned signals, the signals onthe various floors being actuated simultaneously with the signal in the car and governed by of the elevator to cause the signal member to be actuated.

. 7. In a wireless system for signaling vators, the combination of means fdi atin electric oscillations, a sin le'ntl con uctor leading therefrom an can i with capacity members correspoudingiothe different stops of the-elevator car, a capacity member on the car, a relay connected-therewith and actuated by electric energy "transmitted thereby when the capacity members are brought into roxirnit 8. In a system or signal combination of a. high frequency generator, a transformer connected therewith adapted to transmit undamped electric oscillations, a single conductor adjacent the path of the A elevator and the capacity members at intervals along thesanie, a relay on the elevatorcar adapted 'tqbe'actedupon b such oscillotions withoiit a return cont uctor when brought into proximity with one of the capacity members. a

9. In a system for signaling elevators, the a combination of means for generating electric oscillations, a conductor leadin from said means along the path of the eevator car, there being no return conductor, a relay on the elevator car, including an air .electrode adapted to be moved by electrostatic stress, a signal governedby such movement, and means connected with the relay and the c nductor and adapted to increase such ing elevators, the

stress when brought into proximity by the movement of the elevator car.

10. In adevice for use in signaling elevators, in combination, a-high frequency onerator, a transformer, the secondary cc: of said transformer having a wire connected thereto, branches on said wire for up and down signals, switches for throwin correspondin branches of said wire into circuit, up and own signal lamps connected re- ,spectively each to a circuit, push buttons for up and down signaling, a generator, sole- ,noids connected each to a push button, and means w 'erebyiwhen a button is pushed a circuit is closed from thenerator throu h a solenoid and a cprrespon ing switch in t a high frequency-circuit is actuated to closethat circuit through a signal lamp.

, adapted to switch on vators, in combination, a high frequency generator, a conductor leading therefrom, a capacit plate connected to said conductor, a push utton adapted to actuate a switch in the circuit leading to the capacity late, a second capacit plate, one of said lates being on the e evator, the two plates arranged so that when the elevator passes they come into close proximity, and means connected with the other of said plates a signal lamp in the elevator when the plates are in proximity as aforesaid.

12. An elevator, a signal lamp thereon, a generator of high frequency on said elevator, a conductor leading from the high side of said generator, a capacity plate connected thereto, a second capacity plate arranged so as to be near the first when the elevator approaches a landing, a conductor, a big quency generator from the high side of which said conductor leads, a signal lamp in said circuit, a push button, means connected with said push button for closing the circuit to the second plate, and means for holding said circuit closed until the elevator reaches a landing, whereby, when a button is pushed, the car is signaled and as the car approaches a landing, its direction is signaled.

13. In a wireless elevator signal system, in combination, a single direction conductor, a

high frequency generator, to which said conductor is connected, an elevator car, an electrically actuated signal on said car,'a fixed capacity plate on said car connected with sazd signal, a capacity plate to which the single direction conductor is connected, near the path of traverse of thecar, and means whereb when current is sent to the said fixed ate the signal, when the plates pas, 49 is ena led to function. I,

14. In a wireless system for signaling clevators, in combination, a generator, a single conductor leading froin said generator, 0. capacity member formin the terminal of said conductor, and switc means whereby circuit may be established to the capacity plate, an elevator car, an electric lam on said car, a generator for said lam ,a igh frequency current generator on t conductor and a capacity plate on the latter arranged to pass near mentioned plate, whereby when current from the generator first-named is sentto the firstnamed capacity plate, the lamp in the car, when the latter in its traverse brings the two pllates opposite each other, will be made to g In testimony whereof, I hereunto aflix my signature.

FREDERICK-S. McCULLOUGH. 

